Fixup browser to use WebView proxy

Has to escape out to WebViewClassic whenever it needs a hidden API.

Interdepends on https://android-git.corp.google.com/g/165608

Change-Id: Ic61dd7f57f75381864075605d5901f2688648cbd
diff --git a/src/com/android/browser/PreloadedTabControl.java b/src/com/android/browser/PreloadedTabControl.java
index 4ffe6b4..0b2956f 100644
--- a/src/com/android/browser/PreloadedTabControl.java
+++ b/src/com/android/browser/PreloadedTabControl.java
@@ -62,12 +62,12 @@
     }
 
     public void setQuery(String query) {
-        maybeSetQuery(query, mTab.getWebView().getSearchBox());
+        maybeSetQuery(query, mTab.getWebViewClassic().getSearchBox());
     }
 
     public boolean searchBoxSubmit(final String query,
             final String fallbackUrl, final Map<String, String> fallbackHeaders) {
-        final SearchBox sb = mTab.getWebView().getSearchBox();
+        final SearchBox sb = mTab.getWebViewClassic().getSearchBox();
         if (sb == null) {
             // no searchbox, cannot submit. Fallback to regular tab creation
             if (LOGD_ENABLED) Log.d(LOGTAG, "No searchbox, cannot submit query");
@@ -106,7 +106,7 @@
     }
 
     public void searchBoxCancel() {
-        SearchBox sb = mTab.getWebView().getSearchBox();
+        SearchBox sb = mTab.getWebViewClassic().getSearchBox();
         if (sb != null) {
             mLastQuery = null;
             sb.oncancel(new SearchBox.SearchBoxListener(){